参数资料
型号: BD8112EFV-ME2
厂商: Rohm Semiconductor
文件页数: 11/25页
文件大小: 0K
描述: IC LED DRIVER 24-VSSOP
应用说明: Automotive Applications
标准包装: 1
恒定电流:
拓扑: 高端,低端,PWM,降压(降压),升压(升压)
输出数: 2
内部驱动器: 两者兼有
类型 - 主要: 车载,背光
类型 - 次要: 高亮度 LED(HBLED),白色 LED
频率: 250kHz ~ 600kHz
电源电压: 5 V ~ 30 V
安装类型: 表面贴装
封装/外壳: 24-VSSOP(0.220",5.60mm 宽)裸露焊盘
供应商设备封装: 24-HTSSOP
包装: 标准包装
工作温度: -40°C ~ 105°C
其它名称: BD8112EFV-ME2DKR
BD8112EFV-M
● Protection Sequence
VCC
Technical Note
EN
*1
VREG
UVLO
VDAC
SYNC
PWM
*1
*2
*2
4.45V
SS
ILED1
ILED2
ILED1'
ILED2'
VLED1
VLED2
1.0 V
<0.3 V
VLED1'
>4.5 V
100ms *3
VLED2'
1.7V
0.3V
2.0V
100ms *3
VOVP
FAIL1
FAIL2
*4
*1
*2
*3
*4
After VCC voltage reached to operating conditions, set VDAC voltage, and turn on the EN.
After VREG ≧ 4.6V, turn on SYNC and PWM inputs.
Don’t care input sequence PWM and SYNC.
Aprox 100ms of delay when Fosc = 300kHz
When FAIL1 pull-up to outside power supply.
Case for LED2 in open-mode
When VLED2<0.3V and VOVP>1.7V simultaneously, then LED2 becomes off and FAIL2 becomes low
Case for LED1’ in short-mode
When VLED1’>4.5V and VOVP<1.6V simultaneously, then LED1’ becomes off after 100ms approx
Case for LED2’ in short to GND
③ -1 DCDC output voltage increases, and then SS discharges and FAIL1 becomes low
③ -2 Detects VLED2’<0.3V and shuts down after 100ms approx
www.rohm.com
? 2010 ROHM Co., Ltd. All rights reserved.
11/22
2011.08 - Rev.C
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